Swivel sucker-rod joint



June 17, 1930. L B, LEVERlCH 1,765,279

SWIVEL SUCKER ROD JOINT Filed June 4, 1928 Atta rn Patented June 17, 19130 UNITED STATES LESTER BURR LEVERIOH, F RED BARN, TEXAS SWIVEL STICKER-ROD JOINT Applicatidn filed June 4,

The present invention relates to a swivel sucker rod joint which wiTl operate to prevent unscrewing of the various sucker rods in a string, any turning tendency of the rods being permittedy by the swlvel joint, while unscrewing will be prevented.

One of the important objects of the present invention is to provide a device of the above mentioned character which will eliminate the use of rod rotaries thereby saving considerable expense and labor.

It is a well known fact that sucker rods used in a pumping well are subjected to a considerable strain or twist and this results in the uncoupling of the threaded joints,

' It is therefore one of the principal aims of the present invention to provide a joint which will not become disconnected by reason of the strain placed on the rods while the pumping well is in operation. j

Still a further obj ectis to provide a s wlvel sucker rod joint of tle above mentioned character wherein means Vis provided for locking the parts of the joint against rotation when a screw-on fishing tool is being used to ish for broken rods or joints.

A further object is to provide a' swivel sucker rod joint of the above mentioned character which is simple in construction,

30 inexpensive, strong and durable, and further well adapted to the purpose for which it is designed. n

Other objects of the invention will become apparent as the nature of the invention provceeds and when taken in connection with the accompanying drawings.

In the accompanying drawing, forming a part of this application, and in which like reference characters designate like parts 40 throughoumthe several views:

Figure 1 is a longitudinal sectlonal v1ew through thev swivel sucker rod joint embodying my invention, showing the sucker rod joints in locked engagement, and

Figure 2 is a side elevation thereof.

In the drawing, wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 designates the tubular body of the joint, the 6o same being internally threaded at its lower 192s. serial No. 282,738.

end as illustrated at 2, for connection with theJ usual pumping equipment (not shown). The tubular body vis formed at its lower portion directly above the threaded portion 2 with the openings 3 in its opposed sides to 55 permit the escape of sand or sediment, that may collect in the tubular body, during the operation of the pumpingwmechanism.

The upper portion of the tubular body 1 is formed with a reduced bore, wherebyto provide an annular shoulder 4, for a purpose to be presently described. Furthermore, the upper end of the tubular body is formed at diametricaly opposite points with the slots 5, as shown more clearly in Figure 2. The intermediate portion of the tubular body is providedjwith the flat tool engaging faces 6, whereby a wrench or other suitable tool may be applied to turn the tubular body.

Adapted for disposition within the tubular body 1 is the rod 7, that is of a diameter slightly less than the diameter of the reduced portion of the bore of the tubular body 1. and formed on the lower end of this rod 7 is the enlarged head 8 that cooperates with the 75. shoulder 4 to limit the upward sliding ,movement of the rod with respect to the tubular body, and this enlarged head is operable within the intermediate portion of the bore .of the body as indicated in Figure 1.

The upper end of this rod 7 is formed with a threaded stem 9 that is threaded into a threaded socket 10 provided in the body 11, and this body 11 is formed at its upper end with the reduced threaded extension 12, for connection with the lower end of the next adjacent section of the sucker rod. The intermediate portion of the rod 7 is formed with the opposed flat tool engaging faces 13, to facilitate the ready and easy turning of said road when attaching the rod to or removing the same from the body 11.

The lower end of the body` 11 is formed with a depending tongue 14 that cooperates with the slotted portion 5.of lthe tubular 95 body 1, and it is of course to be understood that this tongue 14 is provided with a central opening to accommodate the rod 7, as shown in Figure 1.

When the sucker rod reaches the bottom of easil the well, the weight of the rod 7 will cause the ton ue 14 to be disposed within the slot 5, there y making a-positive connection between the tubular body and the body 11, so that said bodies can not turn with respect to eachother.

When the well is in operation, the ton ue 14 will be disposed out of the slot 5, so t. at the sucker rod will be capable of rotation and without any strain being placed on the joint so that the connection between the sections of the swivel sucker rod joint will not become disconnected during the pumping operation. When the parts are arranged as shown in Figure 2, the sections of the joints can not rotate, and the structure is then used as a screw-on fishing tool to sh for broken rods or joints. The provision of a swivel sucker rod joint of the above mentioned character will tend to eliminate the use of the usual rod rotaries, which are very expensive,

. and furthermore, during the pumping operation, the string of sucker rods will swivel, thus preventing undue wear at certain parts of'the rod and tubing-as the wear will be uniform. j l

It will thusbe seen that the swivel sucker.

rod joint will prolong the life of the pump-v ing rod equipment, and by reason of ,its simplicity, the parts can be readily and assembled or disassembled'.

W ile I have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to,

Without departing from the spirit of the in vention or the scope of the appended claims. Having thus described my invention, what I claim as new is: v

1. In a swivel sucker rod jointof the class described, a tubular member having a transverse slot in its upper end, an annular shoul- A der formed in the upper portion of the b ore of the tubular body, a coupling member surmountin the tubular member and formed with a t readedsocket in its bottom face, a

depending tongue formed on the bottom of the coupling member and provided with an opening for registration with the threaded socket, a rod threaded at its upper end in said socket and or disposition within the tubular member, Aan enlarged head formed on the lower end of the rod, the weight of the rod causing the tongue t o be disposed .in said slot to prevent the rotation of the bodies with respect to each other, said members being capable of rotation with-respect to each other when the tongue is disposed out ofengagemeiit with the slot, the head on the lower end of the rod cooperating with the shoulder to limit the upward movement of the coupling member `with respect to the tubular member. l

2. In a swivel sucker rod joint of the class described, a tubular body for connec- .ing tongue lformed on the bottom of the solid body and provided with an opening in communication with the threaded socket, a rod for disposition within the tubular body, a threaded stem formed on the upper end of the rod for disposition within the threaded socket, in the solid body, an enlarged head formed on the lower end of the rod, the weight of the `rodl causing the tongue to be disposed in said slot to lock the bodies together against rotation, the solid body being free to move with respect to the tubular body when the ton ue is disposed out of engagement with sai slot, said head cooperating with the shoulder to prevent the upward movement of the solid vided with means for connection with another section of the sucker rod, the solid body being formed with a threaded socket in the bottom face thereof, a depending tongue formed on the'bottom of the solid body and provided with an opening in "communication with the threaded socket, a rod for disposition within the tubular body, a threaded stem formed on the upper lend of the rod for disposition within the threaded socket, in the solid body,'an enlarged head f ormed on the lower end of the rod, the' weight of the rod causing the tongue t o be disposed in said slot to lock the bodies toget er against rotation, the solid body being free to move with respect to the tubular posed out of engagement with said slot, said head cooperating ,with the shoulder to limit the upward movement of the solid body with respect to the tubular body, and said rod being provided. with tool engaging faces respectively.

4. Iii .a sectional sucker rod, a rod section comprising a tubular portion and a substantially solid portion adapted to be longitudinally aliiied and providing a unit section, the said solid portion being provided at its upper end with a reduced threaded extension for connection with the lower' end of body when the tongue is dis' the-next adjacent section of the sucker rod and having at its lower end an inwardly eX- tending threaded socket, an elongated rod having its upper end threadedly engaged in said socket and havinor its remaining portion depending into the bore of the said tubular portion, and an enlarged head on the lower end of said rod, said sleeve portion being formed with only the lower part of its bore sufficiently enlarged to accommodate the saidenlarged head for sliding movement therein whereby the said rod is insertible into the said sleeve portion only through the lower end of the latter, stop means provided in said bore for limiting the upward movement of the said rod, means at the lower end of the said sleeve portion affording connection with the next adjacent section of the sucker rod, and coacting means on the adjacent leading faces of the said tubular and solid portion adapted when relatively engaged to lock the said portion together for simultaneous rotation about the common axis.

In testimony whereof I aiix my signature.

LESTER BURK LEVERICH. 

